There isn't an equivalent name in Brazilian Portuguese for Barry.
The first spot of Brazilian mainlaind to be seen by the Portuguese was Santa Cruz de Cabrália, named after Pedro Álvares Cabral, the captain of the fleet which discovered Brazil.
To say "my name" in Brazilian Portuguese, you can say "meu nome."
There is no equivalent name in Brazilian Portuguese for Matt Lowe.
This last name is Portuguese and was popular among Portuguese and Brazilian people
Many many Portuguese explorers left Portugl by way of Lisbon. However, as you have placed this question under Brazilian history, I believe the answer you are looking for is probably "Pedro Alvares Cabral".
Pedro Álvares Cabral sailed west for Portugal and is credited with the discovery of Brazil in 1500. While on a voyage to India, his fleet encountered the Brazilian coast, leading to the Portuguese claiming the territory. Cabral's expedition marked the beginning of Portuguese colonization in Brazil, which would later become a significant part of the Portuguese Empire.
Julia is still a portuguese/brazilian portuguese name. The same as on english.
Pedro Alvares Cabral
In Brazilian Portuguese, "nan" is not a recognized term or word. It is not a word in Portuguese or commonly used in Brazilian culture.
In Portuguese, "Cabral" means someone who lives on a goat farm; essentially "goat farmer".(From the Latin capralis 'place of goats' or capra'goat'.)
"O meu nome é..." or "Chamo-me..." In Brazilian portuguese: "Meu nome é ..." or "Eu me chamo ..."