Form.js

import React from 'react';


export default class Form extends React.Component {

  static propTypes = {
    name: React.PropTypes.string,
  };

  constructor(props) {
    super(props);

  }

  onSubmit(){
  	// captura e envia
  }

  render() {
    return (
      <div>
		 <form onSubmit={this.handleSubmit}>
		 	  <InputName name="name" />
		 </form>
      </div>
    );
  }
}

Input.js

import React from 'react';

export default class InputText extends React.Component {

  constructor(props) {
    super(props);
  }

   validarNome(event){
      const validarNome = /^[A-ZÉÚÍÓÁÈÙÌÒÀÕÃÑÊÛÎÔÂËYÜÏÖÄ]{1}[a-zéúíóáèùìòàõãñêûîôâëyüïöä]+( [A-ZÉÚÍÓÁÈÙÌÒÀÕÃÑÊÛÎÔÂËYÜÏÖÄ]{1}[a-zéúíóáèùìòàõãñêûîôâëyüïöä]+){1,3}$/;
      if (validarNome.test(event.target.value) === false  || event.target.value == ''){
          console.log(event.target.value);
          console.log('inválido');
          this.setState({ valido: 'error'});
      } else {
        console.log('valido');
        this.setState({ valido: ''});
      }
  }

  render() {
    return (
      <input 
      	type="text" 
      	name={this.props.name} 
      	onBlur={this.validaNome}
      />
    );
  }
}