Seems like it is coming in droves now. My husband's cousin just died. He had Down's syndrome but was such a wonderful guy. He got lots of public recognition for things he did. He was sweet to the bone. He loved Elvis and I was always so pleased he would carry my picture in his wallet next to Elvis. He was 58 and lived way longer than we expected. His mother died a few years ago, which was a huge shock for him, and split his time between his sister and brother. He would stand outside and look up at the sky and talk to his mother. His dad died back in the 1960s. When he turned 50 he had a big party and he rode there in a limo, which he called a hearse car. An Elvis impersonator came and performed. We have this wonderful video of him singing Elvis and dancing on film for my birthday about 20 years ago. He will be truly missed by many, many people.
People with developmental disabilities touch so many lives. I know you will miss him very much. Bless his siblings for stepping up to the plate when their mother died--it is something we all hope for, but doesn't always happen.
It sounds like he was a well-loved man and that your whole family will miss him. I think it's a blessing when we have people like him in this world, for however long they're allowed to be with us.