Very tough.
His kids (all adults now) lost their mother (who was a lovely person) in tragic circumstances over twenty years ago - she was a teacher, who died of a sudden heart attack while on holiday, she had just made a cup of tea, one morning, and collapsed - leaving him with four kids, aged from just under a year, to ten years of age.
And, so, he raised his four children, - financially, he was fine, he had his own successful business, he worked in the travel trade - for the best part of a decade, until he met another woman, several years later, who was also, (as, my parents had thought, and as Decent Brother and I both think) an absolutely lovely person, whom he married, very happily, and who became an adored stepmother to his four children.
He used to say (and said so on several occasions to Decent Brother and myself) that he was very lucky with the women in his life - and he was - but he was also a very warm, and generous person, with a great capacity for love, who liked food and drink, and football and music and laughter.