An historic occasion has taken place at County Hall in Haverfordwest with the first ever Citizenship Ceremony.
Jean Davies and Marie Andria-Vana Rixon were the first people to undertake the vow of British citizenship.
The ceremony was led by Barbara Eynon, superintendant registrar for the registration district of Pembrokeshire.
"This ceremony is the final step in the process of becoming a British Citizen," she told Jean and Marie.
"I am confident that having lived in Wales for some time you will have already have felt the warmth and welcome of our nation, and more specifically of the communities in which you each live and work here in Pembrokeshire."
She said one of the prime purposes of the ceremony was to remind applicants of the responsibilities that follow from becoming a British citizen.
"A respect for law and order, valuing freedom of speech, defending the individual's right to their own opinion, tolerance and respect for other people's beliefs, and an understanding of the democratic process are all fundamental to playing a key role in British and indeed Welsh society," she said.
Clr. Peter Stock, cabinet member for communities and the voluntary sector, extended a warm welcome to Wales and Pembrokeshire.
"For you to have chosen to live in Pembrokeshire is a real honour for our county," he said.
Both citizens swore an oath to the Sovereign and pledged to be a loyal citizen before standing for the Welsh and English national anthems.
They then signed a register and were presented with the citizenship certificate and a pack containing a passport application.
Jean Davies came to Britain from South Africa four years ago. She works in County Hall, Haverfordwest, as a reviews officer for Pembrokeshire County Council and lives in Saundersfoot with her husband Stephen and daughter Jessica.
She said she instantly felt at home in Pembrokeshire and was keen to take up citizenship.
"My daughter and husband are British citizens; this is where I work and live, and it just felt like it was the right time," she said.
Marie Andria-Vana Rixon is from Vanuatu in the South Pacific and is a manager with Clinton Cards. She lives with her husband Bill in Tenby.
She said taking up British citizenship felt like the logical thing to do. "I have lived here since 1997 and it seemed to be the next step," she said.