wedlock
Concise Oxford English Dictionary © 2008 Oxford University Press:
wedlock/ˈwedlɒk/
▶noun the state of being married.
– phrases
born in (or out of) wedlock born of married (or unmarried) parents.
born in (or out of) wedlock born of married (or unmarried) parents.
– origin OE wedlāc ‘marriage vow’, from wed ‘pledge’ + the suffix -lāc (denoting action).
'wedlock' also found in these Oxford entries:

