13 baby names with a similar sound and feel to Niven.
You searched for names like
"honored pilgrim"
"born of fire"
"Yahweh has been gracious"
"Welsh form of Maximus"
"dove, peaceful"
"priceless one, of inestimable worth"
"narrow channel, strait"
"God is gracious"
"God ruler; one who rules with divine authority"
"dweller at the Roman camp"
"Symbol, emblem, representation"