Kingdom’s leading name is a married poet (8)

I believe the answer is:

isambard

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'kingdom's leading name' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'is a married poet' is the wordplay.
'married' becomes 'm' (abbreviation, e.g. in genealogy).
'poet' becomes 'bard' (bard is a kind of poet).
'is'+'a'+'m'+'bard'='ISAMBARD'

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(Other definitions for isambard that I've seen before include "pioneering engineer?" , "Engineer's name" , "-- Kingdom Brunel" .)

I've seen this clue in The Times.

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