My parents had my older half-sister in their wedding, she and mom had "mother-daughter" vows. My mother made her dress (it weighs fifteen lbs), my dad made his garb and my elder sister's.
5 years ago today, my mom married a man only 5 years older than me. He has been an awesome addition to my family. He stuck by my mom's side through 3 years of cancer treatments.
Unlikely couples are fun to root for! Glad to hear he's been your mom's knight in shining
armor err, kilt!