Facts:   - teama: wales xv    - source: -lsb- http://www.rugbyleagueproject.org/players/all.html rugbyleagueproject.org -rsb-    - ru yearstart: ≤ 1968    - ru yearend: 70      - birth date: january -- march 1948 y    - ru teama: wales xv    - new: yes    - retired: yes    - ru club: felinfoel rfc llanelli rfc    - name: brian l. butler    - birth place: llanelli district , wales    - ru position: prop    - position: prop    - updated: 13 june 2012    - fullname: brian l. butler    - yearend: 70 ≥ 77    - yearstart: ≤ 1968 1975    - first: ru    - club: felinfoel rfc llanelli rfc warrington   Based on these bullet points, write a short biography describing the life of brian butler .
The answer to this question is:
brian l. butler -lrb- birth registered january -- march -rrb- birth registered in llanelli district , is a welsh rugby union and professional rugby league footballer of the 1960s and '70s , playing representative level rugby union -lrb- ru -rrb- for a ` wales xv ' , and at club level for felinfoel rfc , and llanelli rfc , as a prop , i.e. number 1 or 3 , and playing representative level rugby league -lrb- rl -rrb- for wales , and at club level for bradford northern , swinton , and warrington , as a , i.e. number 8 or 10 .