Please answer the following question: What key details about corky ballas  can be extracted from the following bio?  Bio: mark alexander `` corky '' ballas , sr. -lrb- born december 25 , 1960 -rrb- is a retired competitive ballroom dancer who holds several latin dance championship titles . his son , mark ballas , is a professional dancer on `` dancing with the stars '' . his father was george ballas , who invented the weed eater lawn-trimming device .
A:
- imagesize is 150px- relatives is george pritchard -lrb- sister -rrb- maria ballas jamail -lrb- sister -rrb- ballas lillian ballas miles -lrb- sister -rrb- charles ballas -lrb- grandfather , -rrb- maria lymnaos ballas -lrb- grandmother -rrb- peter ballas -lrb- jr. uncle -rrb- -lrb- brother -rrb- michelle ballas- years active is 1978 -- 1996 ; 2008 -- present- spouse is shirley rich 1985 2007 divorced- children is mark ballas -lrb- 1986 -rrb-- birth date is 25 december 1960- name is corky ballas- birthname is mark alexander ballas , sr.- parents is george ballas maria marulanda- birth place is houston , texas , u.s.- occupation is dancer