Hoster would fight at the Battle of the Bells, where he would be personally wounded by Lord Jon Connington, the current King's Hand.

House Darry and House Mooton would be amongst those who would stay loyal to the Targaryen dynasty. Whilst at Riverrun Petyr would meet Catelyn, who he would fall in love with, and Lysa, who would, in turn, fall in love with him.Дuring Robert's Rebellion Hoster would side with Robert Baratheon, though not all of his vassals would follow him. This minor lord was the father of Petyr Baelish, who would send his son to Riverrun to be fostered by House Tully. Hoster would head south to Dorne where he would fight in the War of the Ninepenny Kings, where he would meet and befriend a minor lord of the Vale. Hoster Tully was an honourable man, and never fostered any bastard children outside of his marriage to Minisa. He also labelled his vassal Walder Frey as 'the Late Lord Frey' for not arriving in time for the Battle of the Trident, and not attending any of the man's weddings afterwards. However, he could be ruthless when it suited him, banishing Petyr Baelish from Riverrun after a disastrous duel with Brandon Stark. He loved his children dearly, telling Catelyn to wait for him at the end of every campaign. Hoster was a fiercely proud man, totally devoted to the advancement of his house - he expressed rage and contempt when his brother Brynden refused to marry, stilled Lysa's child by Petyr Baelish when he found out of her being impregnated outside of marriage, and arranging a marriage for both of his daughters with two great houses of Westeros to empower their forces against Aerys Targaryen and raising Edmure to rule after him. He wears a helmet that is adorned with a crest shaped like a fish. His armour is described as silver plate, with a blue and red cloak and surcloak. His eyes, however remain the same blue as they were in his youth. For the last two years of his life he was perpetually ill and this caused him to grey with age, as well as lose weight and strength. Lord Hoster was tall and broad in his youth, but got portly as he aged. Brynden would leave Riverrun with Lysa when she went to the Vale, where he would serve as the knight of the Bloody Gate. Hoster is also the brother of renowned knight Ser Brynden Tully, although the two have a feud because Brynden turned down the marriage that Hoster proposed for him to a girl of House Redwyne. He also proposes that Edmure marry Arianne Martell, but Prince Doran Martell refuses as she is already betrothed to Prince Viserys III Targaryen. He refuses a request from Lysa that she be allowed to marry Petyr Baelish, and instead weds her to the elderly Lord of the Vale of Arryn, Jon Arryn, but only after Lord Tywin Lannister rejects marrying her to Jaime Lannister and Hoster rejects marrying her to Tyrion Lannister. When he is executed by King Aerys II Targaryen he instead marries Catelyn to Lord Eddard Stark, the new Warden of the North and Brandon's younger brother. Initially he arranged a betrothal between Catelyn and Brandon Stark, heir to the Lordship of Winterfell.

Hoster would secure several important marriages for his daughters. This is likely a trend in women of House Whent, as they are often shown having troubles related to childbirth, a fact that may have passed on to Hoster's daughter, Lysa. His wife died in childbirth with his final son, who also died shortly after that.

Lord Hoster married Minisa Whent and fathered 6 children by her, 4 sons and 2 daughters, although three of those sons did not survive infancy.

House tully of riverrun